Justin Van Patten

We’ve had a busy last few months at Pulumi. From shipping a brand new product offering, Pulumi ESC, to adding several major features in Pulumi Cloud and updates to various Pulumi providers - there is lots to catch up on. In addition to reading these release notes, check out the pulumi/pulumi repo changelog to stay up to date with CLI enhancements after each CLI release. For Pulumi Cloud updates, follow the new features blogs to stay updated on the latest feature releases. Let’s walk through the major updates across Pulumi from the last few months!

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This is the second post in a series about performance optimizations we’ve made to the Pulumi CLI and SDKs. In this post, we’ll go deep on a performance improvement we made for Pulumi Python programs. You can read more about Amazing Performance in the first post in the series.

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Pulumi loves Go, it’s what powers Pulumi. We’ve kept a close eye on the design and development of support for generics in the Go programming language over the years, a feature that allows developers to write type-safe, concise, and reusable code. We’ve been exploring what it’d look like to improve Pulumi’s Go SDKs with generics and recently published a public RFC detailing our plans. We’ve been making progress on the implementation and are excited to announce preview support for Go generics in our core and AWS Go SDKs. If you’re using Go with Pulumi, we’d love for you to give it a try and share your feedback!

// Given
var a pulumi.IntOutput
var b pulumi.StringOutput

// Before (could panic at runtime if you got something wrong)
o := pulumi.All(a, b).ApplyT(func(vs []interface{}) string { // could panic
    a := vs[0].(int) // could panic
    b := vs[1].(string) // could panic
    return strconv.Itoa(a) + b
}).(pulumi.StringOutput) // could panic

// After (compile-time type-safety)
o := pulumix.Apply2(a, b, func(a int, b string) string {
    return strconv.Itoa(a) + b
})

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Over the last 2 years, we’ve seen an increasing trend of cloud development teams migrating to Pulumi from Terraform. These teams often have experience with and meaningful investment in Terraform, but have also typically run into limits of expressivity, productivity, scalability, or reliability with their existing tools. One of the first questions we hear when they decide to move to Pulumi is “how will I migrate my existing Terraform projects over?”.

Today, we’re excited to announce new support for converting whole Terraform projects to Pulumi via the pulumi convert command in the Pulumi CLI. The new Terraform converter includes support for Terraform modules, core features of Terraform 1.4, and the majority of Terraform built-in functions, converting to Pulumi TypeScript, Python, Go, or C#. The new converter can significantly reduce the amount of time it takes to migrate Terraform to Pulumi. Let’s dig in to learn more about the new converter and how to use it.

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At Pulumi, our goal is to offer the best Infrastructure as Code experience for all cloud developers. From the very beginning, we’ve believed that the best IaC experience is made possible by combining a great open source SDK and CLI with a great backend management service. This is why we built and run the Pulumi Service, a rich management platform for your Infrastructure as Code, which includes a forever free option for individuals, a generous free tier for teams, and critical tools for enterprises to manage IaC at scale.

Over the last few years, we’ve continued to expand the features of the Pulumi Service - with Deployments, Audit Logs, SAML SSO and SCIM, Teams, Stack Transfers, Favorites, Organization and Team Access Tokens and much more.

While the majority of Pulumi users do choose to use the Pulumi Service, we also know that there are good reasons why some organizations would prefer to use Pulumi IaC alone without the Pulumi Service. And so we support and continue to invest in enabling a variety of additional backends that allow the Pulumi CLI to be used with state stored in the local filesystem or in cloud storage like S3, Azure Blob Storage, or Google Cloud Storage.

Historically the Pulumi Service backend and the self-managed file storage backends have differed in their handling of “projects”. The Pulumi Service stores state for a Pulumi stack in a seperate namespace per project. The self-managed backends have historically stored all stacks in a single namespace across all projects. This inconsistency has been a common source of confusion for users getting started with Pulumi when using the file storage backends.

Today, we are aligning how projects are managed across all backends, adding Project-Scoped Stacks support to the self-managed backends.

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It’s now possible to provide resource methods from Pulumi Packages. Resource methods are similar to functions, but instead of being exposed as top-level functions in a module, methods are exposed as methods on a resource class. This allows for a more object-oriented approach to exposing functionality—operations performed by a resource (that potentially use the resource’s state) can now be exposed as methods on the resource. Resource methods can be implemented once, in your language of choice, and made available to users in all Pulumi languages.

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Today we’re excited to announce some fairly significant improvements to the experience of writing Pulumi programs in Python. We’ve added type annotations to APIs and now allow passing nested data as strongly typed classes instead of raw dicts. This provides a much better editing experience in IDEs, improved type checking, and overall consistency.

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We recently announced a new policy as code solution, CrossGuard that validates policies at deployment time. Policies are expressed as code and are used to prevent the creation of out-of-compliance resources. This allows an organization to prevent entire classes of security and reliability defects to ensure infrastructure is following best practices. Because policies are written using full-blown programming languages, it’s possible to do interesting things such as combining IAM Access Analyzer and Pulumi CrossGuard. In this post, we’ll take a closer look at the different types of policies that can be written.

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